Genuine Sonnax for use with Sonnax Tools
6L45, 6L50, 6L80, 6L90, 6T70 (Gen. 1), 6T75 (Gen. 1)
Pressure Switch Rebuild Kit
Part No. 124740-70K
use with Tooling: 124740-TL70
Listed GM 6-speed transmissions often set various trouble codes related to failures of fluid pressure switches that are internal to the transmission electro-hydraulic control module (TEHCM). These codes may be accompanied by TCC apply problems or shift irregularities such as slipping, flares, harsh application, and bind-ups. As time goes by, the laminated portions of the pressure switches can breach, preventing normal switch operation. If more than one switch breaks down, failsafe mode can be triggered. Since switches cannot be obtained through OE channels, replacement of the TEHCM was the only previous remedy available.
It is no longer necessary to replace the expensive TEHCM assembly to rectify this concern. Installing Sonnax pressure switch rebuild kit 124740-70K restores normal switch operation, eliminating codes and providing renewed shift performance in all ranges.
Allows salvage of expensive TEHCM
Kit includes enough discs and seals to rebuild 10 TEHCM units
Note
Before installing kit, test switches to verify proper electrical operation. Kit repairs laminate disc and seal failures only; it will not rectify electrical breakdown. See instructions for details.
Contents
Laminate Discs (40)
Seals (40)
Warning:
Pressure switch rebuild installation tool kit 124740-TL70 replaces 124740-TL30 which is no longer in production.
6L45, 6L50, 6L80, 6L90, 6T70 (Gen. 1), 6T75 (Gen. 1)
Pressure Switch Rebuild Installation Tool Kit
Part No. 124740-TL70
Tool kit for 124740-70K.
Contents
Laminate Installation Tool
Seal Installer
Piston
Seal Plunger